Home / 1,308.46-1,962.98-430.93

Finding the Fourth Proportional to 1,308.46, 1,962.98 and 430.93

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Solution

The fourth proportional to 1,308.46, 1,962.98 and 430.93 is: 646.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.46 : 1,962.98 = 430.93 : x
  2. Step 2: Convert to fraction form
    1,308.46/1,962.98 = 430.93/x
  3. Step 3: Cross multiply
    1,308.46x = 1,962.98 × 430.93
  4. Step 4: Simplify right side
    1,308.46x = 845,910.97
  5. Step 5: Solve for x
    x = 845,910.97/1,308.46
  6. Step 6: Final answer
    x = 646.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.