Home / 1,088.65-1,631.98-438.94

Finding the Fourth Proportional to 1,088.65, 1,631.98 and 438.94

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Solution

The fourth proportional to 1,088.65, 1,631.98 and 438.94 is: 658.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.65 : 1,631.98 = 438.94 : x
  2. Step 2: Convert to fraction form
    1,088.65/1,631.98 = 438.94/x
  3. Step 3: Cross multiply
    1,088.65x = 1,631.98 × 438.94
  4. Step 4: Simplify right side
    1,088.65x = 716,341.30
  5. Step 5: Solve for x
    x = 716,341.30/1,088.65
  6. Step 6: Final answer
    x = 658.01

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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.