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Finding the Fourth Proportional to 614.65, 847.63 and 474.55

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Solution

The fourth proportional to 614.65, 847.63 and 474.55 is: 654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.65 : 847.63 = 474.55 : x
  2. Step 2: Convert to fraction form
    614.65/847.63 = 474.55/x
  3. Step 3: Cross multiply
    614.65x = 847.63 × 474.55
  4. Step 4: Simplify right side
    614.65x = 402,238.58
  5. Step 5: Solve for x
    x = 402,238.58/614.65
  6. Step 6: Final answer
    x = 654.42

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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.