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Finding the Fourth Proportional to 1,529.57, 2,291.93 and 870.59

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Solution

The fourth proportional to 1,529.57, 2,291.93 and 870.59 is: 1,304.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.57 : 2,291.93 = 870.59 : x
  2. Step 2: Convert to fraction form
    1,529.57/2,291.93 = 870.59/x
  3. Step 3: Cross multiply
    1,529.57x = 2,291.93 × 870.59
  4. Step 4: Simplify right side
    1,529.57x = 1,995,331.34
  5. Step 5: Solve for x
    x = 1,995,331.34/1,529.57
  6. Step 6: Final answer
    x = 1,304.50

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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.