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Finding the Fourth Proportional to 1,148.48, 1,585.44 and 734.72

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Solution

The fourth proportional to 1,148.48, 1,585.44 and 734.72 is: 1,014.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.48 : 1,585.44 = 734.72 : x
  2. Step 2: Convert to fraction form
    1,148.48/1,585.44 = 734.72/x
  3. Step 3: Cross multiply
    1,148.48x = 1,585.44 × 734.72
  4. Step 4: Simplify right side
    1,148.48x = 1,164,854.48
  5. Step 5: Solve for x
    x = 1,164,854.48/1,148.48
  6. Step 6: Final answer
    x = 1,014.26

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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.