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Finding the Fourth Proportional to 581.55, 802.53 and 319.56

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Solution

The fourth proportional to 581.55, 802.53 and 319.56 is: 440.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.55 : 802.53 = 319.56 : x
  2. Step 2: Convert to fraction form
    581.55/802.53 = 319.56/x
  3. Step 3: Cross multiply
    581.55x = 802.53 × 319.56
  4. Step 4: Simplify right side
    581.55x = 256,459.29
  5. Step 5: Solve for x
    x = 256,459.29/581.55
  6. Step 6: Final answer
    x = 440.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.