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Finding the Fourth Proportional to 1,058.79, 1,588.63 and 409.98

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Solution

The fourth proportional to 1,058.79, 1,588.63 and 409.98 is: 615.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.79 : 1,588.63 = 409.98 : x
  2. Step 2: Convert to fraction form
    1,058.79/1,588.63 = 409.98/x
  3. Step 3: Cross multiply
    1,058.79x = 1,588.63 × 409.98
  4. Step 4: Simplify right side
    1,058.79x = 651,306.53
  5. Step 5: Solve for x
    x = 651,306.53/1,058.79
  6. Step 6: Final answer
    x = 615.14

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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.