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Finding the Fourth Proportional to 542.53, 812.58 and 298.90

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Solution

The fourth proportional to 542.53, 812.58 and 298.90 is: 447.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.53 : 812.58 = 298.90 : x
  2. Step 2: Convert to fraction form
    542.53/812.58 = 298.90/x
  3. Step 3: Cross multiply
    542.53x = 812.58 × 298.90
  4. Step 4: Simplify right side
    542.53x = 242,880.16
  5. Step 5: Solve for x
    x = 242,880.16/542.53
  6. Step 6: Final answer
    x = 447.68

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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.