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Finding the Fourth Proportional to 545.71, 753.42 and 375.66

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Solution

The fourth proportional to 545.71, 753.42 and 375.66 is: 518.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.71 : 753.42 = 375.66 : x
  2. Step 2: Convert to fraction form
    545.71/753.42 = 375.66/x
  3. Step 3: Cross multiply
    545.71x = 753.42 × 375.66
  4. Step 4: Simplify right side
    545.71x = 283,029.76
  5. Step 5: Solve for x
    x = 283,029.76/545.71
  6. Step 6: Final answer
    x = 518.64

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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.