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Finding the Fourth Proportional to 670.16, 926.28 and 618.32

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Solution

The fourth proportional to 670.16, 926.28 and 618.32 is: 854.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.16 : 926.28 = 618.32 : x
  2. Step 2: Convert to fraction form
    670.16/926.28 = 618.32/x
  3. Step 3: Cross multiply
    670.16x = 926.28 × 618.32
  4. Step 4: Simplify right side
    670.16x = 572,737.45
  5. Step 5: Solve for x
    x = 572,737.45/670.16
  6. Step 6: Final answer
    x = 854.63

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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.