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Finding the Fourth Proportional to 1,017.85, 1,526.75 and 324.50

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Solution

The fourth proportional to 1,017.85, 1,526.75 and 324.50 is: 486.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,017.85 : 1,526.75 = 324.50 : x
  2. Step 2: Convert to fraction form
    1,017.85/1,526.75 = 324.50/x
  3. Step 3: Cross multiply
    1,017.85x = 1,526.75 × 324.50
  4. Step 4: Simplify right side
    1,017.85x = 495,435.00
  5. Step 5: Solve for x
    x = 495,435.00/1,017.85
  6. Step 6: Final answer
    x = 486.75

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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.