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Finding the Fourth Proportional to 570.66, 785.79 and 549.78

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Solution

The fourth proportional to 570.66, 785.79 and 549.78 is: 757.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.66 : 785.79 = 549.78 : x
  2. Step 2: Convert to fraction form
    570.66/785.79 = 549.78/x
  3. Step 3: Cross multiply
    570.66x = 785.79 × 549.78
  4. Step 4: Simplify right side
    570.66x = 432,011.63
  5. Step 5: Solve for x
    x = 432,011.63/570.66
  6. Step 6: Final answer
    x = 757.04

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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.