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Finding the Fourth Proportional to 670.48, 923.28 and 656.08

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Solution

The fourth proportional to 670.48, 923.28 and 656.08 is: 903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.48 : 923.28 = 656.08 : x
  2. Step 2: Convert to fraction form
    670.48/923.28 = 656.08/x
  3. Step 3: Cross multiply
    670.48x = 923.28 × 656.08
  4. Step 4: Simplify right side
    670.48x = 605,745.54
  5. Step 5: Solve for x
    x = 605,745.54/670.48
  6. Step 6: Final answer
    x = 903.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.