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Finding the Fourth Proportional to 1,038.20, 1,554.03 and 568.98

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Solution

The fourth proportional to 1,038.20, 1,554.03 and 568.98 is: 851.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.20 : 1,554.03 = 568.98 : x
  2. Step 2: Convert to fraction form
    1,038.20/1,554.03 = 568.98/x
  3. Step 3: Cross multiply
    1,038.20x = 1,554.03 × 568.98
  4. Step 4: Simplify right side
    1,038.20x = 884,211.99
  5. Step 5: Solve for x
    x = 884,211.99/1,038.20
  6. Step 6: Final answer
    x = 851.68

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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.