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Finding the Fourth Proportional to 1,492.05, 2,058.80 and 862.46

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Solution

The fourth proportional to 1,492.05, 2,058.80 and 862.46 is: 1,190.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.05 : 2,058.80 = 862.46 : x
  2. Step 2: Convert to fraction form
    1,492.05/2,058.80 = 862.46/x
  3. Step 3: Cross multiply
    1,492.05x = 2,058.80 × 862.46
  4. Step 4: Simplify right side
    1,492.05x = 1,775,622.35
  5. Step 5: Solve for x
    x = 1,775,622.35/1,492.05
  6. Step 6: Final answer
    x = 1,190.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.