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Finding the Fourth Proportional to 570.77, 787.62 and 322.05

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Solution

The fourth proportional to 570.77, 787.62 and 322.05 is: 444.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.77 : 787.62 = 322.05 : x
  2. Step 2: Convert to fraction form
    570.77/787.62 = 322.05/x
  3. Step 3: Cross multiply
    570.77x = 787.62 × 322.05
  4. Step 4: Simplify right side
    570.77x = 253,653.02
  5. Step 5: Solve for x
    x = 253,653.02/570.77
  6. Step 6: Final answer
    x = 444.40

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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.