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Finding the Fourth Proportional to 700.48, 1,050.66 and 310.36

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Solution

The fourth proportional to 700.48, 1,050.66 and 310.36 is: 465.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.48 : 1,050.66 = 310.36 : x
  2. Step 2: Convert to fraction form
    700.48/1,050.66 = 310.36/x
  3. Step 3: Cross multiply
    700.48x = 1,050.66 × 310.36
  4. Step 4: Simplify right side
    700.48x = 326,082.84
  5. Step 5: Solve for x
    x = 326,082.84/700.48
  6. Step 6: Final answer
    x = 465.51

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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.