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Finding the Fourth Proportional to 607.23, 838.06 and 345.20

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Solution

The fourth proportional to 607.23, 838.06 and 345.20 is: 476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.23 : 838.06 = 345.20 : x
  2. Step 2: Convert to fraction form
    607.23/838.06 = 345.20/x
  3. Step 3: Cross multiply
    607.23x = 838.06 × 345.20
  4. Step 4: Simplify right side
    607.23x = 289,293.26
  5. Step 5: Solve for x
    x = 289,293.26/607.23
  6. Step 6: Final answer
    x = 476.41

Related Problems

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Half scale
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Double scale
Find fourth proportional to 608.23, 839.44 and 346.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.