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Finding the Fourth Proportional to 633.12, 948.06 and 542.40

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Solution

The fourth proportional to 633.12, 948.06 and 542.40 is: 812.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.12 : 948.06 = 542.40 : x
  2. Step 2: Convert to fraction form
    633.12/948.06 = 542.40/x
  3. Step 3: Cross multiply
    633.12x = 948.06 × 542.40
  4. Step 4: Simplify right side
    633.12x = 514,227.74
  5. Step 5: Solve for x
    x = 514,227.74/633.12
  6. Step 6: Final answer
    x = 812.21

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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.