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Finding the Fourth Proportional to 623.04, 933.82 and 391.98

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Solution

The fourth proportional to 623.04, 933.82 and 391.98 is: 587.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.04 : 933.82 = 391.98 : x
  2. Step 2: Convert to fraction form
    623.04/933.82 = 391.98/x
  3. Step 3: Cross multiply
    623.04x = 933.82 × 391.98
  4. Step 4: Simplify right side
    623.04x = 366,038.76
  5. Step 5: Solve for x
    x = 366,038.76/623.04
  6. Step 6: Final answer
    x = 587.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.