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Finding the Fourth Proportional to 1,665.25, 2,497.86 and 554.75

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Solution

The fourth proportional to 1,665.25, 2,497.86 and 554.75 is: 832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.25 : 2,497.86 = 554.75 : x
  2. Step 2: Convert to fraction form
    1,665.25/2,497.86 = 554.75/x
  3. Step 3: Cross multiply
    1,665.25x = 2,497.86 × 554.75
  4. Step 4: Simplify right side
    1,665.25x = 1,385,684.71
  5. Step 5: Solve for x
    x = 1,385,684.71/1,665.25
  6. Step 6: Final answer
    x = 832.12

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1.5x scale

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.