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Finding the Fourth Proportional to 670.07, 925.54 and 474.46

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Solution

The fourth proportional to 670.07, 925.54 and 474.46 is: 655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.07 : 925.54 = 474.46 : x
  2. Step 2: Convert to fraction form
    670.07/925.54 = 474.46/x
  3. Step 3: Cross multiply
    670.07x = 925.54 × 474.46
  4. Step 4: Simplify right side
    670.07x = 439,128.21
  5. Step 5: Solve for x
    x = 439,128.21/670.07
  6. Step 6: Final answer
    x = 655.34

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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.