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Finding the Fourth Proportional to 1,032.95, 1,550.45 and 485.52

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Solution

The fourth proportional to 1,032.95, 1,550.45 and 485.52 is: 728.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.95 : 1,550.45 = 485.52 : x
  2. Step 2: Convert to fraction form
    1,032.95/1,550.45 = 485.52/x
  3. Step 3: Cross multiply
    1,032.95x = 1,550.45 × 485.52
  4. Step 4: Simplify right side
    1,032.95x = 752,774.48
  5. Step 5: Solve for x
    x = 752,774.48/1,032.95
  6. Step 6: Final answer
    x = 728.76

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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.