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Finding the Fourth Proportional to 369.75, 510.48 and 253.65

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Solution

The fourth proportional to 369.75, 510.48 and 253.65 is: 350.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.75 : 510.48 = 253.65 : x
  2. Step 2: Convert to fraction form
    369.75/510.48 = 253.65/x
  3. Step 3: Cross multiply
    369.75x = 510.48 × 253.65
  4. Step 4: Simplify right side
    369.75x = 129,483.25
  5. Step 5: Solve for x
    x = 129,483.25/369.75
  6. Step 6: Final answer
    x = 350.19

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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.