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Finding the Fourth Proportional to 1,058.94, 1,587.30 and 571.86

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Solution

The fourth proportional to 1,058.94, 1,587.30 and 571.86 is: 857.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.94 : 1,587.30 = 571.86 : x
  2. Step 2: Convert to fraction form
    1,058.94/1,587.30 = 571.86/x
  3. Step 3: Cross multiply
    1,058.94x = 1,587.30 × 571.86
  4. Step 4: Simplify right side
    1,058.94x = 907,713.38
  5. Step 5: Solve for x
    x = 907,713.38/1,058.94
  6. Step 6: Final answer
    x = 857.19

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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.