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Finding the Fourth Proportional to 498.86, 688.46 and 302.37

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Solution

The fourth proportional to 498.86, 688.46 and 302.37 is: 417.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.86 : 688.46 = 302.37 : x
  2. Step 2: Convert to fraction form
    498.86/688.46 = 302.37/x
  3. Step 3: Cross multiply
    498.86x = 688.46 × 302.37
  4. Step 4: Simplify right side
    498.86x = 208,169.65
  5. Step 5: Solve for x
    x = 208,169.65/498.86
  6. Step 6: Final answer
    x = 417.29

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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.