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Finding the Fourth Proportional to 1,531.88, 2,300.07 and 945.20

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Solution

The fourth proportional to 1,531.88, 2,300.07 and 945.20 is: 1,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.88 : 2,300.07 = 945.20 : x
  2. Step 2: Convert to fraction form
    1,531.88/2,300.07 = 945.20/x
  3. Step 3: Cross multiply
    1,531.88x = 2,300.07 × 945.20
  4. Step 4: Simplify right side
    1,531.88x = 2,174,014.66
  5. Step 5: Solve for x
    x = 2,174,014.66/1,531.88
  6. Step 6: Final answer
    x = 1,419.19

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1.5x scale

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.