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Finding the Fourth Proportional to 632.01, 947.55 and 426.06

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Solution

The fourth proportional to 632.01, 947.55 and 426.06 is: 638.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.01 : 947.55 = 426.06 : x
  2. Step 2: Convert to fraction form
    632.01/947.55 = 426.06/x
  3. Step 3: Cross multiply
    632.01x = 947.55 × 426.06
  4. Step 4: Simplify right side
    632.01x = 403,718.30
  5. Step 5: Solve for x
    x = 403,718.30/632.01
  6. Step 6: Final answer
    x = 638.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.