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Finding the Fourth Proportional to 624.75, 862.16 and 344.99

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Solution

The fourth proportional to 624.75, 862.16 and 344.99 is: 476.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.75 : 862.16 = 344.99 : x
  2. Step 2: Convert to fraction form
    624.75/862.16 = 344.99/x
  3. Step 3: Cross multiply
    624.75x = 862.16 × 344.99
  4. Step 4: Simplify right side
    624.75x = 297,430.54
  5. Step 5: Solve for x
    x = 297,430.54/624.75
  6. Step 6: Final answer
    x = 476.08

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Find fourth proportional to 312.38, 431.08 and 172.49
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Double scale
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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.