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Finding the Fourth Proportional to 918.67, 1,266.01 and 656.23

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Solution

The fourth proportional to 918.67, 1,266.01 and 656.23 is: 904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    918.67 : 1,266.01 = 656.23 : x
  2. Step 2: Convert to fraction form
    918.67/1,266.01 = 656.23/x
  3. Step 3: Cross multiply
    918.67x = 1,266.01 × 656.23
  4. Step 4: Simplify right side
    918.67x = 830,793.74
  5. Step 5: Solve for x
    x = 830,793.74/918.67
  6. Step 6: Final answer
    x = 904.34

Related Problems

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Half scale
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Double scale
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1.5x scale

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.