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Finding the Fourth Proportional to 1,076.65, 1,615.52 and 460.87

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Solution

The fourth proportional to 1,076.65, 1,615.52 and 460.87 is: 691.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.65 : 1,615.52 = 460.87 : x
  2. Step 2: Convert to fraction form
    1,076.65/1,615.52 = 460.87/x
  3. Step 3: Cross multiply
    1,076.65x = 1,615.52 × 460.87
  4. Step 4: Simplify right side
    1,076.65x = 744,541.82
  5. Step 5: Solve for x
    x = 744,541.82/1,076.65
  6. Step 6: Final answer
    x = 691.54

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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.