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Finding the Fourth Proportional to 507.86, 700.78 and 297.88

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Solution

The fourth proportional to 507.86, 700.78 and 297.88 is: 411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.86 : 700.78 = 297.88 : x
  2. Step 2: Convert to fraction form
    507.86/700.78 = 297.88/x
  3. Step 3: Cross multiply
    507.86x = 700.78 × 297.88
  4. Step 4: Simplify right side
    507.86x = 208,748.35
  5. Step 5: Solve for x
    x = 208,748.35/507.86
  6. Step 6: Final answer
    x = 411.04

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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.