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Finding the Fourth Proportional to 897.65, 1,238.77 and 673.19

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Solution

The fourth proportional to 897.65, 1,238.77 and 673.19 is: 929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.65 : 1,238.77 = 673.19 : x
  2. Step 2: Convert to fraction form
    897.65/1,238.77 = 673.19/x
  3. Step 3: Cross multiply
    897.65x = 1,238.77 × 673.19
  4. Step 4: Simplify right side
    897.65x = 833,927.58
  5. Step 5: Solve for x
    x = 833,927.58/897.65
  6. Step 6: Final answer
    x = 929.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.