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Finding the Fourth Proportional to 570.87, 787.79 and 322.27

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Solution

The fourth proportional to 570.87, 787.79 and 322.27 is: 444.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.87 : 787.79 = 322.27 : x
  2. Step 2: Convert to fraction form
    570.87/787.79 = 322.27/x
  3. Step 3: Cross multiply
    570.87x = 787.79 × 322.27
  4. Step 4: Simplify right side
    570.87x = 253,875.53
  5. Step 5: Solve for x
    x = 253,875.53/570.87
  6. Step 6: Final answer
    x = 444.72

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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.