Home / 1,058.21-1,587.33-288.71

Finding the Fourth Proportional to 1,058.21, 1,587.33 and 288.71

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Solution

The fourth proportional to 1,058.21, 1,587.33 and 288.71 is: 433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.21 : 1,587.33 = 288.71 : x
  2. Step 2: Convert to fraction form
    1,058.21/1,587.33 = 288.71/x
  3. Step 3: Cross multiply
    1,058.21x = 1,587.33 × 288.71
  4. Step 4: Simplify right side
    1,058.21x = 458,270.11
  5. Step 5: Solve for x
    x = 458,270.11/1,058.21
  6. Step 6: Final answer
    x = 433.06

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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.