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Finding the Fourth Proportional to 504.71, 696.47 and 283.70

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Solution

The fourth proportional to 504.71, 696.47 and 283.70 is: 391.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.71 : 696.47 = 283.70 : x
  2. Step 2: Convert to fraction form
    504.71/696.47 = 283.70/x
  3. Step 3: Cross multiply
    504.71x = 696.47 × 283.70
  4. Step 4: Simplify right side
    504.71x = 197,586.14
  5. Step 5: Solve for x
    x = 197,586.14/504.71
  6. Step 6: Final answer
    x = 391.48

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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.