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Finding the Fourth Proportional to 1,130.35, 1,695.53 and 437.23

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Solution

The fourth proportional to 1,130.35, 1,695.53 and 437.23 is: 655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,130.35 : 1,695.53 = 437.23 : x
  2. Step 2: Convert to fraction form
    1,130.35/1,695.53 = 437.23/x
  3. Step 3: Cross multiply
    1,130.35x = 1,695.53 × 437.23
  4. Step 4: Simplify right side
    1,130.35x = 741,336.58
  5. Step 5: Solve for x
    x = 741,336.58/1,130.35
  6. Step 6: Final answer
    x = 655.85

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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.