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Finding the Fourth Proportional to 1,675.17, 2,512.40 and 442.53

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Solution

The fourth proportional to 1,675.17, 2,512.40 and 442.53 is: 663.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.17 : 2,512.40 = 442.53 : x
  2. Step 2: Convert to fraction form
    1,675.17/2,512.40 = 442.53/x
  3. Step 3: Cross multiply
    1,675.17x = 2,512.40 × 442.53
  4. Step 4: Simplify right side
    1,675.17x = 1,111,810.16
  5. Step 5: Solve for x
    x = 1,111,810.16/1,675.17
  6. Step 6: Final answer
    x = 663.70

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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.