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Finding the Fourth Proportional to 621.70, 926.10 and 607.30

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Solution

The fourth proportional to 621.70, 926.10 and 607.30 is: 904.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.70 : 926.10 = 607.30 : x
  2. Step 2: Convert to fraction form
    621.70/926.10 = 607.30/x
  3. Step 3: Cross multiply
    621.70x = 926.10 × 607.30
  4. Step 4: Simplify right side
    621.70x = 562,420.53
  5. Step 5: Solve for x
    x = 562,420.53/621.70
  6. Step 6: Final answer
    x = 904.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.