Home / 1,058.18-1,587.09-288.50

Finding the Fourth Proportional to 1,058.18, 1,587.09 and 288.50

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Solution

The fourth proportional to 1,058.18, 1,587.09 and 288.50 is: 432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.18 : 1,587.09 = 288.50 : x
  2. Step 2: Convert to fraction form
    1,058.18/1,587.09 = 288.50/x
  3. Step 3: Cross multiply
    1,058.18x = 1,587.09 × 288.50
  4. Step 4: Simplify right side
    1,058.18x = 457,875.47
  5. Step 5: Solve for x
    x = 457,875.47/1,058.18
  6. Step 6: Final answer
    x = 432.70

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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.