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Finding the Fourth Proportional to 369.97, 510.70 and 245.70

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Solution

The fourth proportional to 369.97, 510.70 and 245.70 is: 339.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.97 : 510.70 = 245.70 : x
  2. Step 2: Convert to fraction form
    369.97/510.70 = 245.70/x
  3. Step 3: Cross multiply
    369.97x = 510.70 × 245.70
  4. Step 4: Simplify right side
    369.97x = 125,476.51
  5. Step 5: Solve for x
    x = 125,476.51/369.97
  6. Step 6: Final answer
    x = 339.16

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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.