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Finding the Fourth Proportional to 960.37, 1,438.98 and 497.51

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Solution

The fourth proportional to 960.37, 1,438.98 and 497.51 is: 745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.37 : 1,438.98 = 497.51 : x
  2. Step 2: Convert to fraction form
    960.37/1,438.98 = 497.51/x
  3. Step 3: Cross multiply
    960.37x = 1,438.98 × 497.51
  4. Step 4: Simplify right side
    960.37x = 715,906.07
  5. Step 5: Solve for x
    x = 715,906.07/960.37
  6. Step 6: Final answer
    x = 745.45

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Double scale
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1.5x scale

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.