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Finding the Fourth Proportional to 694.65, 1,041.20 and 304.53

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Solution

The fourth proportional to 694.65, 1,041.20 and 304.53 is: 456.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.65 : 1,041.20 = 304.53 : x
  2. Step 2: Convert to fraction form
    694.65/1,041.20 = 304.53/x
  3. Step 3: Cross multiply
    694.65x = 1,041.20 × 304.53
  4. Step 4: Simplify right side
    694.65x = 317,075.11
  5. Step 5: Solve for x
    x = 317,075.11/694.65
  6. Step 6: Final answer
    x = 456.45

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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.