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Finding the Fourth Proportional to 654.24, 903.03 and 621.19

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Solution

The fourth proportional to 654.24, 903.03 and 621.19 is: 857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.24 : 903.03 = 621.19 : x
  2. Step 2: Convert to fraction form
    654.24/903.03 = 621.19/x
  3. Step 3: Cross multiply
    654.24x = 903.03 × 621.19
  4. Step 4: Simplify right side
    654.24x = 560,953.21
  5. Step 5: Solve for x
    x = 560,953.21/654.24
  6. Step 6: Final answer
    x = 857.41

Related Problems

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Half scale
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Double scale
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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.