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Finding the Fourth Proportional to 907.19, 1,360.98 and 330.06

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Solution

The fourth proportional to 907.19, 1,360.98 and 330.06 is: 495.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.19 : 1,360.98 = 330.06 : x
  2. Step 2: Convert to fraction form
    907.19/1,360.98 = 330.06/x
  3. Step 3: Cross multiply
    907.19x = 1,360.98 × 330.06
  4. Step 4: Simplify right side
    907.19x = 449,205.06
  5. Step 5: Solve for x
    x = 449,205.06/907.19
  6. Step 6: Final answer
    x = 495.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.