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Finding the Fourth Proportional to 369.53, 510.13 and 245.40

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Solution

The fourth proportional to 369.53, 510.13 and 245.40 is: 338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.53 : 510.13 = 245.40 : x
  2. Step 2: Convert to fraction form
    369.53/510.13 = 245.40/x
  3. Step 3: Cross multiply
    369.53x = 510.13 × 245.40
  4. Step 4: Simplify right side
    369.53x = 125,184.30
  5. Step 5: Solve for x
    x = 125,184.30/369.53
  6. Step 6: Final answer
    x = 338.77

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Double scale
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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.