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Finding the Fourth Proportional to 543.02, 810.60 and 477.34

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Solution

The fourth proportional to 543.02, 810.60 and 477.34 is: 712.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.02 : 810.60 = 477.34 : x
  2. Step 2: Convert to fraction form
    543.02/810.60 = 477.34/x
  3. Step 3: Cross multiply
    543.02x = 810.60 × 477.34
  4. Step 4: Simplify right side
    543.02x = 386,931.80
  5. Step 5: Solve for x
    x = 386,931.80/543.02
  6. Step 6: Final answer
    x = 712.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.