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Finding the Fourth Proportional to 1,657.41, 2,486.10 and 424.81

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Solution

The fourth proportional to 1,657.41, 2,486.10 and 424.81 is: 637.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.41 : 2,486.10 = 424.81 : x
  2. Step 2: Convert to fraction form
    1,657.41/2,486.10 = 424.81/x
  3. Step 3: Cross multiply
    1,657.41x = 2,486.10 × 424.81
  4. Step 4: Simplify right side
    1,657.41x = 1,056,120.14
  5. Step 5: Solve for x
    x = 1,056,120.14/1,657.41
  6. Step 6: Final answer
    x = 637.21

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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.