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Finding the Fourth Proportional to 666.24, 917.76 and 568.32

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Solution

The fourth proportional to 666.24, 917.76 and 568.32 is: 782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.24 : 917.76 = 568.32 : x
  2. Step 2: Convert to fraction form
    666.24/917.76 = 568.32/x
  3. Step 3: Cross multiply
    666.24x = 917.76 × 568.32
  4. Step 4: Simplify right side
    666.24x = 521,581.36
  5. Step 5: Solve for x
    x = 521,581.36/666.24
  6. Step 6: Final answer
    x = 782.87

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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.