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Finding the Fourth Proportional to 934.55, 1,290.54 and 603.54

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Solution

The fourth proportional to 934.55, 1,290.54 and 603.54 is: 833.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.55 : 1,290.54 = 603.54 : x
  2. Step 2: Convert to fraction form
    934.55/1,290.54 = 603.54/x
  3. Step 3: Cross multiply
    934.55x = 1,290.54 × 603.54
  4. Step 4: Simplify right side
    934.55x = 778,892.51
  5. Step 5: Solve for x
    x = 778,892.51/934.55
  6. Step 6: Final answer
    x = 833.44

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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.