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Finding the Fourth Proportional to 507.79, 700.72 and 283.74

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Solution

The fourth proportional to 507.79, 700.72 and 283.74 is: 391.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.79 : 700.72 = 283.74 : x
  2. Step 2: Convert to fraction form
    507.79/700.72 = 283.74/x
  3. Step 3: Cross multiply
    507.79x = 700.72 × 283.74
  4. Step 4: Simplify right side
    507.79x = 198,822.29
  5. Step 5: Solve for x
    x = 198,822.29/507.79
  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.