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Finding the Fourth Proportional to 356.03, 534.03 and 99.53

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Solution

The fourth proportional to 356.03, 534.03 and 99.53 is: 149.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.03 : 534.03 = 99.53 : x
  2. Step 2: Convert to fraction form
    356.03/534.03 = 99.53/x
  3. Step 3: Cross multiply
    356.03x = 534.03 × 99.53
  4. Step 4: Simplify right side
    356.03x = 53,152.01
  5. Step 5: Solve for x
    x = 53,152.01/356.03
  6. Step 6: Final answer
    x = 149.29

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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.