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Finding the Fourth Proportional to 543.52, 750.12 and 310.64

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Solution

The fourth proportional to 543.52, 750.12 and 310.64 is: 428.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.52 : 750.12 = 310.64 : x
  2. Step 2: Convert to fraction form
    543.52/750.12 = 310.64/x
  3. Step 3: Cross multiply
    543.52x = 750.12 × 310.64
  4. Step 4: Simplify right side
    543.52x = 233,017.28
  5. Step 5: Solve for x
    x = 233,017.28/543.52
  6. Step 6: Final answer
    x = 428.72

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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.