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Finding the Fourth Proportional to 1,317.74, 1,976.04 and 527.00

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Solution

The fourth proportional to 1,317.74, 1,976.04 and 527.00 is: 790.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.74 : 1,976.04 = 527.00 : x
  2. Step 2: Convert to fraction form
    1,317.74/1,976.04 = 527.00/x
  3. Step 3: Cross multiply
    1,317.74x = 1,976.04 × 527.00
  4. Step 4: Simplify right side
    1,317.74x = 1,041,363.20
  5. Step 5: Solve for x
    x = 1,041,363.20/1,317.74
  6. Step 6: Final answer
    x = 790.27

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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.