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Finding the Fourth Proportional to 570.64, 787.08 and 396.04

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Solution

The fourth proportional to 570.64, 787.08 and 396.04 is: 546.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.64 : 787.08 = 396.04 : x
  2. Step 2: Convert to fraction form
    570.64/787.08 = 396.04/x
  3. Step 3: Cross multiply
    570.64x = 787.08 × 396.04
  4. Step 4: Simplify right side
    570.64x = 311,715.16
  5. Step 5: Solve for x
    x = 311,715.16/570.64
  6. Step 6: Final answer
    x = 546.26

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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.