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Finding the Fourth Proportional to 747.02, 1,030.05 and 511.11

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Solution

The fourth proportional to 747.02, 1,030.05 and 511.11 is: 704.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.02 : 1,030.05 = 511.11 : x
  2. Step 2: Convert to fraction form
    747.02/1,030.05 = 511.11/x
  3. Step 3: Cross multiply
    747.02x = 1,030.05 × 511.11
  4. Step 4: Simplify right side
    747.02x = 526,468.86
  5. Step 5: Solve for x
    x = 526,468.86/747.02
  6. Step 6: Final answer
    x = 704.76

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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.