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Finding the Fourth Proportional to 1,085.60, 1,629.48 and 598.88

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Solution

The fourth proportional to 1,085.60, 1,629.48 and 598.88 is: 898.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085.60 : 1,629.48 = 598.88 : x
  2. Step 2: Convert to fraction form
    1,085.60/1,629.48 = 598.88/x
  3. Step 3: Cross multiply
    1,085.60x = 1,629.48 × 598.88
  4. Step 4: Simplify right side
    1,085.60x = 975,862.98
  5. Step 5: Solve for x
    x = 975,862.98/1,085.60
  6. Step 6: Final answer
    x = 898.92

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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.