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Finding the Fourth Proportional to 647.38, 890.96 and 594.93

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Solution

The fourth proportional to 647.38, 890.96 and 594.93 is: 818.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.38 : 890.96 = 594.93 : x
  2. Step 2: Convert to fraction form
    647.38/890.96 = 594.93/x
  3. Step 3: Cross multiply
    647.38x = 890.96 × 594.93
  4. Step 4: Simplify right side
    647.38x = 530,058.83
  5. Step 5: Solve for x
    x = 530,058.83/647.38
  6. Step 6: Final answer
    x = 818.78

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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.