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Finding the Fourth Proportional to 557.01, 770.04 and 551.76

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Solution

The fourth proportional to 557.01, 770.04 and 551.76 is: 762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.01 : 770.04 = 551.76 : x
  2. Step 2: Convert to fraction form
    557.01/770.04 = 551.76/x
  3. Step 3: Cross multiply
    557.01x = 770.04 × 551.76
  4. Step 4: Simplify right side
    557.01x = 424,877.27
  5. Step 5: Solve for x
    x = 424,877.27/557.01
  6. Step 6: Final answer
    x = 762.78

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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.