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Finding the Fourth Proportional to 1,667.52, 2,501.28 and 571.84

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Solution

The fourth proportional to 1,667.52, 2,501.28 and 571.84 is: 857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,667.52 : 2,501.28 = 571.84 : x
  2. Step 2: Convert to fraction form
    1,667.52/2,501.28 = 571.84/x
  3. Step 3: Cross multiply
    1,667.52x = 2,501.28 × 571.84
  4. Step 4: Simplify right side
    1,667.52x = 1,430,331.96
  5. Step 5: Solve for x
    x = 1,430,331.96/1,667.52
  6. Step 6: Final answer
    x = 857.76

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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.