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Finding the Fourth Proportional to 907.32, 1,360.38 and 359.36

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Solution

The fourth proportional to 907.32, 1,360.38 and 359.36 is: 538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.32 : 1,360.38 = 359.36 : x
  2. Step 2: Convert to fraction form
    907.32/1,360.38 = 359.36/x
  3. Step 3: Cross multiply
    907.32x = 1,360.38 × 359.36
  4. Step 4: Simplify right side
    907.32x = 488,866.16
  5. Step 5: Solve for x
    x = 488,866.16/907.32
  6. Step 6: Final answer
    x = 538.80

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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.