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Finding the Fourth Proportional to 670.32, 924.76 and 434.16

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Solution

The fourth proportional to 670.32, 924.76 and 434.16 is: 598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.32 : 924.76 = 434.16 : x
  2. Step 2: Convert to fraction form
    670.32/924.76 = 434.16/x
  3. Step 3: Cross multiply
    670.32x = 924.76 × 434.16
  4. Step 4: Simplify right side
    670.32x = 401,493.80
  5. Step 5: Solve for x
    x = 401,493.80/670.32
  6. Step 6: Final answer
    x = 598.96

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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.