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Finding the Fourth Proportional to 595.02, 821.80 and 398.18

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Solution

The fourth proportional to 595.02, 821.80 and 398.18 is: 549.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.02 : 821.80 = 398.18 : x
  2. Step 2: Convert to fraction form
    595.02/821.80 = 398.18/x
  3. Step 3: Cross multiply
    595.02x = 821.80 × 398.18
  4. Step 4: Simplify right side
    595.02x = 327,224.32
  5. Step 5: Solve for x
    x = 327,224.32/595.02
  6. Step 6: Final answer
    x = 549.94

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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.