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Finding the Fourth Proportional to 700.22, 1,045.30 and 622.58

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Solution

The fourth proportional to 700.22, 1,045.30 and 622.58 is: 929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.22 : 1,045.30 = 622.58 : x
  2. Step 2: Convert to fraction form
    700.22/1,045.30 = 622.58/x
  3. Step 3: Cross multiply
    700.22x = 1,045.30 × 622.58
  4. Step 4: Simplify right side
    700.22x = 650,782.87
  5. Step 5: Solve for x
    x = 650,782.87/700.22
  6. Step 6: Final answer
    x = 929.40

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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.