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Finding the Fourth Proportional to 624.92, 862.41 and 345.17

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Solution

The fourth proportional to 624.92, 862.41 and 345.17 is: 476.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.92 : 862.41 = 345.17 : x
  2. Step 2: Convert to fraction form
    624.92/862.41 = 345.17/x
  3. Step 3: Cross multiply
    624.92x = 862.41 × 345.17
  4. Step 4: Simplify right side
    624.92x = 297,678.06
  5. Step 5: Solve for x
    x = 297,678.06/624.92
  6. Step 6: Final answer
    x = 476.35

Related Problems

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Half scale
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Double scale
Find fourth proportional to 625.92, 863.79 and 346.17
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.