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Finding the Fourth Proportional to 568.65, 858.21 and 554.07

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Solution

The fourth proportional to 568.65, 858.21 and 554.07 is: 836.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.65 : 858.21 = 554.07 : x
  2. Step 2: Convert to fraction form
    568.65/858.21 = 554.07/x
  3. Step 3: Cross multiply
    568.65x = 858.21 × 554.07
  4. Step 4: Simplify right side
    568.65x = 475,508.41
  5. Step 5: Solve for x
    x = 475,508.41/568.65
  6. Step 6: Final answer
    x = 836.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.