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Finding the Fourth Proportional to 1,455.72, 2,007.51 and 958.14

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Solution

The fourth proportional to 1,455.72, 2,007.51 and 958.14 is: 1,321.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.72 : 2,007.51 = 958.14 : x
  2. Step 2: Convert to fraction form
    1,455.72/2,007.51 = 958.14/x
  3. Step 3: Cross multiply
    1,455.72x = 2,007.51 × 958.14
  4. Step 4: Simplify right side
    1,455.72x = 1,923,475.63
  5. Step 5: Solve for x
    x = 1,923,475.63/1,455.72
  6. Step 6: Final answer
    x = 1,321.32

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1.5x scale

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.