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Finding the Fourth Proportional to 543.56, 750.20 and 403.47

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Solution

The fourth proportional to 543.56, 750.20 and 403.47 is: 556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.56 : 750.20 = 403.47 : x
  2. Step 2: Convert to fraction form
    543.56/750.20 = 403.47/x
  3. Step 3: Cross multiply
    543.56x = 750.20 × 403.47
  4. Step 4: Simplify right side
    543.56x = 302,681.18
  5. Step 5: Solve for x
    x = 302,681.18/543.56
  6. Step 6: Final answer
    x = 556.85

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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.