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Finding the Fourth Proportional to 1,301.78, 1,952.78 and 436.10

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Solution

The fourth proportional to 1,301.78, 1,952.78 and 436.10 is: 654.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.78 : 1,952.78 = 436.10 : x
  2. Step 2: Convert to fraction form
    1,301.78/1,952.78 = 436.10/x
  3. Step 3: Cross multiply
    1,301.78x = 1,952.78 × 436.10
  4. Step 4: Simplify right side
    1,301.78x = 851,607.36
  5. Step 5: Solve for x
    x = 851,607.36/1,301.78
  6. Step 6: Final answer
    x = 654.19

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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.