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Finding the Fourth Proportional to 984.08, 1,358 and 542

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Solution

The fourth proportional to 984.08, 1,358 and 542 is: 747.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.08 : 1,358 = 542 : x
  2. Step 2: Convert to fraction form
    984.08/1,358 = 542/x
  3. Step 3: Cross multiply
    984.08x = 1,358 × 542
  4. Step 4: Simplify right side
    984.08x = 736,036
  5. Step 5: Solve for x
    x = 736,036/984.08
  6. Step 6: Final answer
    x = 747.94

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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.