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Finding the Fourth Proportional to 803.32, 1,108.32 and 508.48

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Solution

The fourth proportional to 803.32, 1,108.32 and 508.48 is: 701.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.32 : 1,108.32 = 508.48 : x
  2. Step 2: Convert to fraction form
    803.32/1,108.32 = 508.48/x
  3. Step 3: Cross multiply
    803.32x = 1,108.32 × 508.48
  4. Step 4: Simplify right side
    803.32x = 563,558.55
  5. Step 5: Solve for x
    x = 563,558.55/803.32
  6. Step 6: Final answer
    x = 701.54

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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.