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Finding the Fourth Proportional to 594.71, 821.61 and 455.39

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Solution

The fourth proportional to 594.71, 821.61 and 455.39 is: 629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.71 : 821.61 = 455.39 : x
  2. Step 2: Convert to fraction form
    594.71/821.61 = 455.39/x
  3. Step 3: Cross multiply
    594.71x = 821.61 × 455.39
  4. Step 4: Simplify right side
    594.71x = 374,148.87
  5. Step 5: Solve for x
    x = 374,148.87/594.71
  6. Step 6: Final answer
    x = 629.13

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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.