Home / 1,058.30-1,587.06-317.66

Finding the Fourth Proportional to 1,058.30, 1,587.06 and 317.66

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Solution

The fourth proportional to 1,058.30, 1,587.06 and 317.66 is: 476.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.30 : 1,587.06 = 317.66 : x
  2. Step 2: Convert to fraction form
    1,058.30/1,587.06 = 317.66/x
  3. Step 3: Cross multiply
    1,058.30x = 1,587.06 × 317.66
  4. Step 4: Simplify right side
    1,058.30x = 504,145.48
  5. Step 5: Solve for x
    x = 504,145.48/1,058.30
  6. Step 6: Final answer
    x = 476.37

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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.