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Finding the Fourth Proportional to 668.90, 923.05 and 370.13

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Solution

The fourth proportional to 668.90, 923.05 and 370.13 is: 510.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.90 : 923.05 = 370.13 : x
  2. Step 2: Convert to fraction form
    668.90/923.05 = 370.13/x
  3. Step 3: Cross multiply
    668.90x = 923.05 × 370.13
  4. Step 4: Simplify right side
    668.90x = 341,648.50
  5. Step 5: Solve for x
    x = 341,648.50/668.90
  6. Step 6: Final answer
    x = 510.76

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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.