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Finding the Fourth Proportional to 595.43, 821.29 and 418.77

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Solution

The fourth proportional to 595.43, 821.29 and 418.77 is: 577.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.43 : 821.29 = 418.77 : x
  2. Step 2: Convert to fraction form
    595.43/821.29 = 418.77/x
  3. Step 3: Cross multiply
    595.43x = 821.29 × 418.77
  4. Step 4: Simplify right side
    595.43x = 343,931.35
  5. Step 5: Solve for x
    x = 343,931.35/595.43
  6. Step 6: Final answer
    x = 577.61

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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.