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Finding the Fourth Proportional to 760.14, 1,138.59 and 527.94

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Solution

The fourth proportional to 760.14, 1,138.59 and 527.94 is: 790.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.14 : 1,138.59 = 527.94 : x
  2. Step 2: Convert to fraction form
    760.14/1,138.59 = 527.94/x
  3. Step 3: Cross multiply
    760.14x = 1,138.59 × 527.94
  4. Step 4: Simplify right side
    760.14x = 601,107.20
  5. Step 5: Solve for x
    x = 601,107.20/760.14
  6. Step 6: Final answer
    x = 790.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.