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Finding the Fourth Proportional to 1,058.09, 1,587.13 and 510.17

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Solution

The fourth proportional to 1,058.09, 1,587.13 and 510.17 is: 765.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.09 : 1,587.13 = 510.17 : x
  2. Step 2: Convert to fraction form
    1,058.09/1,587.13 = 510.17/x
  3. Step 3: Cross multiply
    1,058.09x = 1,587.13 × 510.17
  4. Step 4: Simplify right side
    1,058.09x = 809,696.90
  5. Step 5: Solve for x
    x = 809,696.90/1,058.09
  6. Step 6: Final answer
    x = 765.25

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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.