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Finding the Fourth Proportional to 699.66, 1,048.95 and 375.12

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Solution

The fourth proportional to 699.66, 1,048.95 and 375.12 is: 562.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.66 : 1,048.95 = 375.12 : x
  2. Step 2: Convert to fraction form
    699.66/1,048.95 = 375.12/x
  3. Step 3: Cross multiply
    699.66x = 1,048.95 × 375.12
  4. Step 4: Simplify right side
    699.66x = 393,482.12
  5. Step 5: Solve for x
    x = 393,482.12/699.66
  6. Step 6: Final answer
    x = 562.39

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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.