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Finding the Fourth Proportional to 1,017.73, 1,526.58 and 287.29

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Solution

The fourth proportional to 1,017.73, 1,526.58 and 287.29 is: 430.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017.73 : 1,526.58 = 287.29 : x
  2. Step 2: Convert to fraction form
    1,017.73/1,526.58 = 287.29/x
  3. Step 3: Cross multiply
    1,017.73x = 1,526.58 × 287.29
  4. Step 4: Simplify right side
    1,017.73x = 438,571.17
  5. Step 5: Solve for x
    x = 438,571.17/1,017.73
  6. Step 6: Final answer
    x = 430.93

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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.