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Finding the Fourth Proportional to 899.29, 1,240.88 and 568.17

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Solution

The fourth proportional to 899.29, 1,240.88 and 568.17 is: 783.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.29 : 1,240.88 = 568.17 : x
  2. Step 2: Convert to fraction form
    899.29/1,240.88 = 568.17/x
  3. Step 3: Cross multiply
    899.29x = 1,240.88 × 568.17
  4. Step 4: Simplify right side
    899.29x = 705,030.79
  5. Step 5: Solve for x
    x = 705,030.79/899.29
  6. Step 6: Final answer
    x = 783.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.