Home / 1,528.23-2,291.52-487.95

Finding the Fourth Proportional to 1,528.23, 2,291.52 and 487.95

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Solution

The fourth proportional to 1,528.23, 2,291.52 and 487.95 is: 731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.23 : 2,291.52 = 487.95 : x
  2. Step 2: Convert to fraction form
    1,528.23/2,291.52 = 487.95/x
  3. Step 3: Cross multiply
    1,528.23x = 2,291.52 × 487.95
  4. Step 4: Simplify right side
    1,528.23x = 1,118,147.18
  5. Step 5: Solve for x
    x = 1,118,147.18/1,528.23
  6. Step 6: Final answer
    x = 731.66

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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.