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Finding the Fourth Proportional to 1,657.95, 2,486.96 and 547.01

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Solution

The fourth proportional to 1,657.95, 2,486.96 and 547.01 is: 820.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.95 : 2,486.96 = 547.01 : x
  2. Step 2: Convert to fraction form
    1,657.95/2,486.96 = 547.01/x
  3. Step 3: Cross multiply
    1,657.95x = 2,486.96 × 547.01
  4. Step 4: Simplify right side
    1,657.95x = 1,360,381.20
  5. Step 5: Solve for x
    x = 1,360,381.20/1,657.95
  6. Step 6: Final answer
    x = 820.52

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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.