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Finding the Fourth Proportional to 608.17, 839.29 and 346.19

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Solution

The fourth proportional to 608.17, 839.29 and 346.19 is: 477.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.17 : 839.29 = 346.19 : x
  2. Step 2: Convert to fraction form
    608.17/839.29 = 346.19/x
  3. Step 3: Cross multiply
    608.17x = 839.29 × 346.19
  4. Step 4: Simplify right side
    608.17x = 290,549.98
  5. Step 5: Solve for x
    x = 290,549.98/608.17
  6. Step 6: Final answer
    x = 477.74

Related Problems

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Half scale
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Double scale
Find fourth proportional to 609.17, 840.67 and 347.19
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.