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Finding the Fourth Proportional to 543.53, 750.14 and 307.57

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Solution

The fourth proportional to 543.53, 750.14 and 307.57 is: 424.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.53 : 750.14 = 307.57 : x
  2. Step 2: Convert to fraction form
    543.53/750.14 = 307.57/x
  3. Step 3: Cross multiply
    543.53x = 750.14 × 307.57
  4. Step 4: Simplify right side
    543.53x = 230,720.56
  5. Step 5: Solve for x
    x = 230,720.56/543.53
  6. Step 6: Final answer
    x = 424.49

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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.