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Finding the Fourth Proportional to 934.60, 1,290.30 and 603.52

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Solution

The fourth proportional to 934.60, 1,290.30 and 603.52 is: 833.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.60 : 1,290.30 = 603.52 : x
  2. Step 2: Convert to fraction form
    934.60/1,290.30 = 603.52/x
  3. Step 3: Cross multiply
    934.60x = 1,290.30 × 603.52
  4. Step 4: Simplify right side
    934.60x = 778,721.86
  5. Step 5: Solve for x
    x = 778,721.86/934.60
  6. Step 6: Final answer
    x = 833.21

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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.