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Finding the Fourth Proportional to 369.58, 510.08 and 229.78

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Solution

The fourth proportional to 369.58, 510.08 and 229.78 is: 317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.58 : 510.08 = 229.78 : x
  2. Step 2: Convert to fraction form
    369.58/510.08 = 229.78/x
  3. Step 3: Cross multiply
    369.58x = 510.08 × 229.78
  4. Step 4: Simplify right side
    369.58x = 117,206.18
  5. Step 5: Solve for x
    x = 117,206.18/369.58
  6. Step 6: Final answer
    x = 317.13

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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.