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Finding the Fourth Proportional to 897.03, 1,344.74 and 319.77

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Solution

The fourth proportional to 897.03, 1,344.74 and 319.77 is: 479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.03 : 1,344.74 = 319.77 : x
  2. Step 2: Convert to fraction form
    897.03/1,344.74 = 319.77/x
  3. Step 3: Cross multiply
    897.03x = 1,344.74 × 319.77
  4. Step 4: Simplify right side
    897.03x = 430,005.91
  5. Step 5: Solve for x
    x = 430,005.91/897.03
  6. Step 6: Final answer
    x = 479.37

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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.