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Finding the Fourth Proportional to 907.06, 1,356.54 and 663.34

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Solution

The fourth proportional to 907.06, 1,356.54 and 663.34 is: 992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    907.06 : 1,356.54 = 663.34 : x
  2. Step 2: Convert to fraction form
    907.06/1,356.54 = 663.34/x
  3. Step 3: Cross multiply
    907.06x = 1,356.54 × 663.34
  4. Step 4: Simplify right side
    907.06x = 899,847.24
  5. Step 5: Solve for x
    x = 899,847.24/907.06
  6. Step 6: Final answer
    x = 992.05

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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.