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Finding the Fourth Proportional to 504.80, 696.54 and 283.76

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Solution

The fourth proportional to 504.80, 696.54 and 283.76 is: 391.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.80 : 696.54 = 283.76 : x
  2. Step 2: Convert to fraction form
    504.80/696.54 = 283.76/x
  3. Step 3: Cross multiply
    504.80x = 696.54 × 283.76
  4. Step 4: Simplify right side
    504.80x = 197,650.19
  5. Step 5: Solve for x
    x = 197,650.19/504.80
  6. Step 6: Final answer
    x = 391.54

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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.