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Finding the Fourth Proportional to 543.85, 750.58 and 307.85

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Solution

The fourth proportional to 543.85, 750.58 and 307.85 is: 424.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.85 : 750.58 = 307.85 : x
  2. Step 2: Convert to fraction form
    543.85/750.58 = 307.85/x
  3. Step 3: Cross multiply
    543.85x = 750.58 × 307.85
  4. Step 4: Simplify right side
    543.85x = 231,061.53
  5. Step 5: Solve for x
    x = 231,061.53/543.85
  6. Step 6: Final answer
    x = 424.86

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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.