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Finding the Fourth Proportional to 646.74, 888.66 and 572.94

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Solution

The fourth proportional to 646.74, 888.66 and 572.94 is: 787.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.74 : 888.66 = 572.94 : x
  2. Step 2: Convert to fraction form
    646.74/888.66 = 572.94/x
  3. Step 3: Cross multiply
    646.74x = 888.66 × 572.94
  4. Step 4: Simplify right side
    646.74x = 509,148.86
  5. Step 5: Solve for x
    x = 509,148.86/646.74
  6. Step 6: Final answer
    x = 787.25

Related Problems

Find fourth proportional to 323.37, 444.33 and 286.47
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.