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Finding the Fourth Proportional to 880.51, 1,320.66 and 359.98

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Solution

The fourth proportional to 880.51, 1,320.66 and 359.98 is: 539.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.51 : 1,320.66 = 359.98 : x
  2. Step 2: Convert to fraction form
    880.51/1,320.66 = 359.98/x
  3. Step 3: Cross multiply
    880.51x = 1,320.66 × 359.98
  4. Step 4: Simplify right side
    880.51x = 475,411.19
  5. Step 5: Solve for x
    x = 475,411.19/880.51
  6. Step 6: Final answer
    x = 539.93

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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.