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Finding the Fourth Proportional to 1,372.90, 2,058.80 and 507.02

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Solution

The fourth proportional to 1,372.90, 2,058.80 and 507.02 is: 760.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.90 : 2,058.80 = 507.02 : x
  2. Step 2: Convert to fraction form
    1,372.90/2,058.80 = 507.02/x
  3. Step 3: Cross multiply
    1,372.90x = 2,058.80 × 507.02
  4. Step 4: Simplify right side
    1,372.90x = 1,043,852.78
  5. Step 5: Solve for x
    x = 1,043,852.78/1,372.90
  6. Step 6: Final answer
    x = 760.33

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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.