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Finding the Fourth Proportional to 1,058.81, 1,588.23 and 328.50

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Solution

The fourth proportional to 1,058.81, 1,588.23 and 328.50 is: 492.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.81 : 1,588.23 = 328.50 : x
  2. Step 2: Convert to fraction form
    1,058.81/1,588.23 = 328.50/x
  3. Step 3: Cross multiply
    1,058.81x = 1,588.23 × 328.50
  4. Step 4: Simplify right side
    1,058.81x = 521,733.56
  5. Step 5: Solve for x
    x = 521,733.56/1,058.81
  6. Step 6: Final answer
    x = 492.76

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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.