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Finding the Fourth Proportional to 595.51, 820.80 and 418.53

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Solution

The fourth proportional to 595.51, 820.80 and 418.53 is: 576.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.51 : 820.80 = 418.53 : x
  2. Step 2: Convert to fraction form
    595.51/820.80 = 418.53/x
  3. Step 3: Cross multiply
    595.51x = 820.80 × 418.53
  4. Step 4: Simplify right side
    595.51x = 343,527.33
  5. Step 5: Solve for x
    x = 343,527.33/595.51
  6. Step 6: Final answer
    x = 576.86

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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.