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Finding the Fourth Proportional to 610.72, 842.90 and 463.10

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Solution

The fourth proportional to 610.72, 842.90 and 463.10 is: 639.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.72 : 842.90 = 463.10 : x
  2. Step 2: Convert to fraction form
    610.72/842.90 = 463.10/x
  3. Step 3: Cross multiply
    610.72x = 842.90 × 463.10
  4. Step 4: Simplify right side
    610.72x = 390,346.99
  5. Step 5: Solve for x
    x = 390,346.99/610.72
  6. Step 6: Final answer
    x = 639.16

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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.