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Finding the Fourth Proportional to 1,071.99, 1,615.30 and 954.13

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Solution

The fourth proportional to 1,071.99, 1,615.30 and 954.13 is: 1,437.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071.99 : 1,615.30 = 954.13 : x
  2. Step 2: Convert to fraction form
    1,071.99/1,615.30 = 954.13/x
  3. Step 3: Cross multiply
    1,071.99x = 1,615.30 × 954.13
  4. Step 4: Simplify right side
    1,071.99x = 1,541,206.19
  5. Step 5: Solve for x
    x = 1,541,206.19/1,071.99
  6. Step 6: Final answer
    x = 1,437.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.