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Finding the Fourth Proportional to 607.41, 838.17 and 345.38

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Solution

The fourth proportional to 607.41, 838.17 and 345.38 is: 476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.41 : 838.17 = 345.38 : x
  2. Step 2: Convert to fraction form
    607.41/838.17 = 345.38/x
  3. Step 3: Cross multiply
    607.41x = 838.17 × 345.38
  4. Step 4: Simplify right side
    607.41x = 289,482.96
  5. Step 5: Solve for x
    x = 289,482.96/607.41
  6. Step 6: Final answer
    x = 476.59

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Double scale
Find fourth proportional to 608.41, 839.55 and 346.38
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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.