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Finding the Fourth Proportional to 1,028.39, 1,532.81 and 970.01

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Solution

The fourth proportional to 1,028.39, 1,532.81 and 970.01 is: 1,445.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.39 : 1,532.81 = 970.01 : x
  2. Step 2: Convert to fraction form
    1,028.39/1,532.81 = 970.01/x
  3. Step 3: Cross multiply
    1,028.39x = 1,532.81 × 970.01
  4. Step 4: Simplify right side
    1,028.39x = 1,486,841.03
  5. Step 5: Solve for x
    x = 1,486,841.03/1,028.39
  6. Step 6: Final answer
    x = 1,445.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.