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Finding the Fourth Proportional to 369.36, 510.84 and 291.45

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Solution

The fourth proportional to 369.36, 510.84 and 291.45 is: 403.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.36 : 510.84 = 291.45 : x
  2. Step 2: Convert to fraction form
    369.36/510.84 = 291.45/x
  3. Step 3: Cross multiply
    369.36x = 510.84 × 291.45
  4. Step 4: Simplify right side
    369.36x = 148,884.32
  5. Step 5: Solve for x
    x = 148,884.32/369.36
  6. Step 6: Final answer
    x = 403.09

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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.